The 2006 Chevy Equinox features either a CD player or a cassette player, depending upon which model you purchased. Although the 2006 Chevy Equinox does not feature a direct audio input for your MP3 player, you can connect an MP3 player in a 2006 Chevy Equinox via an adapter.
Plug the audio input end of the FM transmitter into your MP3 player.
Plug the other end of the FM transmitter into your 2006 Chevy Equinox's power adapter.
Turn on your MP3 player, and tune your 2006 Chevy Equinox's FM radio to a fuzzy radio station. Tune the FM transmitter to the same station. Your MP3 music is transmitted over the radio station through your 2006 Chevy Equinox's car stereo.
Plug the audio input end of the cassette adapter into your MP3 player.
Insert the cassette tape part of the cassette adapter into your 2006 Chevy Equinox's cassette drive with the cord connected to your MP3 player facing outward.
Set your 2006 Chevy Equinox to play the cassette, then turn on your MP3 player. Your MP3 music is transmitted through the cassette tape into your car stereo.